About: http://webisa.webdatacommons.org/414489208

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Stocks added to the S&P 500 and other indices tend to see increased activity in the days surrounding the changes, because mutual funds and other investments that track the indices must purchase the stock to balance their portfolios.
http://www.w3.org/ns/prov#wasQuotedFrom	yahoo.com